[PATCH 3/4] MMC/core: Make sure the power is up, when detect the card

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From: Jerry Huang <Chang-Ming.Huang@xxxxxxxxxxxxx>

Before running get_cd() recall function to detect whether the card is
present, must make sure the power is up.

Signed-off-by: Jerry Huang <Chang-Ming.Huang@xxxxxxxxxxxxx>
---
 drivers/mmc/core/core.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 5278ffb..a08e6b1 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2066,8 +2066,10 @@ void mmc_rescan(struct work_struct *work)
 	 */
 	mmc_bus_put(host);
 
+	mmc_power_up(host);
 	if (host->ops->get_cd && host->ops->get_cd(host) == 0)
 		goto out;
+	mmc_power_off(host);
 
 	mmc_claim_host(host);
 	for (i = 0; i < ARRAY_SIZE(freqs); i++) {
-- 
1.7.5.4


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